Add libva, a library for video accelerated video processing.

third_party/libva/va/va_glx.h

Index: third_party/libva/va/va_glx.h
diff --git a/third_party/libva/va/va_glx.h b/third_party/libva/va/va_glx.h
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index 0000000000000000000000000000000000000000..1a0624d1cecc1f7986c8bf6138bbeba8824ffc44
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+++ b/third_party/libva/va/va_glx.h
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+/*
+ * Copyright (C) 2009 Splitted-Desktop Systems. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef VA_GLX_H
+#define VA_GLX_H
+
+#include <va/va.h>
+#include <GL/glx.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Return a suitable VADisplay for VA API
+ *
+ * @param[in] dpy the X11 display
+ * @return a VADisplay
+ */
+VADisplay vaGetDisplayGLX(
+    Display *dpy
+);
+
+/**
+ * Create a surface used for display to OpenGL
+ *
+ * The application shall maintain the live GLX context itself.
+ * Implementations are free to use glXGetCurrentContext() and
+ * glXGetCurrentDrawable() functions for internal purposes.
+ *
+ * @param[in]  dpy        the VA display
+ * @param[in]  target     the GL target to which the texture needs to be bound
+ * @param[in]  texture    the GL texture
+ * @param[out] gl_surface the VA/GLX surface
+ * @return VA_STATUS_SUCCESS if successful
+ */
+VAStatus vaCreateSurfaceGLX(
+    VADisplay dpy,
+    GLenum    target,
+    GLuint    texture,
+    void    **gl_surface
+);
+
+/**
+ * Destroy a VA/GLX surface
+ *
+ * The application shall maintain the live GLX context itself.
+ * Implementations are free to use glXGetCurrentContext() and
+ * glXGetCurrentDrawable() functions for internal purposes.
+ *
+ * @param[in]  dpy        the VA display
+ * @param[in]  gl_surface the VA surface
+ * @return VA_STATUS_SUCCESS if successful
+ */
+VAStatus vaDestroySurfaceGLX(
+    VADisplay dpy,
+    void     *gl_surface
+);
+
+/**
+ * Copy a VA surface to a VA/GLX surface
+ *
+ * This function will not return until the copy is completed. At this
+ * point, the underlying GL texture will contain the surface pixels
+ * in an RGB format defined by the user.
+ *
+ * The application shall maintain the live GLX context itself.
+ * Implementations are free to use glXGetCurrentContext() and
+ * glXGetCurrentDrawable() functions for internal purposes.
+ *
+ * @param[in]  dpy        the VA display
+ * @param[in]  gl_surface the VA/GLX destination surface
+ * @param[in]  surface    the VA source surface
+ * @param[in]  flags      the PutSurface flags
+ * @return VA_STATUS_SUCCESS if successful
+ */
+VAStatus vaCopySurfaceGLX(
+    VADisplay    dpy,
+    void        *gl_surface,
+    VASurfaceID  surface,
+    unsigned int flags
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* VA_GLX_H */